Means for securing artificial teeth to dental plates or the like.



M. M. MAUPIN.

MEANS FOR SECURING ARTTHCIAL TEETH T0 DENTAL PLAT APPLICATION menAUG. 1. 1914.

ES OR THE LIKE.

1,26%339 Patented May 21,1918.

ATTUFQNEY MALCOLM MILLER MAUPIN, 0F CINCINNATI, OHIO, ASSIGNOR TOHIMSELF ANYD i E. GERMANN, BOTH OF CINCINNATLOHIO.

MEANS FOR SECURING ARTIFICIAL TEETH T0 DENTAL PLATES OR THE LIKE.

Specification of Letters Patent.

Patented May 21, 1918.

Application filed August 1, 1914. Serial No. 854,541.

To all whom it may concern:

Be it known that I, MALCOLM MiLLER lliAUPIN, a citizen of the UnitedStates, and a resident of Cincinnati, in the county of Hamilton andState of Ohio, have invented a certain new and useful Improvement inMeans for Securing Artificial Teeth to Dental Plates or the like, ofwhich the following is a specification.

This invention relates to devices used in anchoring or fasteningartificial teeth or porcelain facings in crown or bridge work; and itsobject is to provide a staple-shape resilient metallic grip whosetransverse bow portion is initially secured to the labial face of thecrown or bridge work and whose resilient parallel arms project forwardlyfrom said labial face of the work and engage a narrow parallel-walledcavity in the lingual side of the tooth or facing that is readilypositioned on the crown or bridge and firmly cemented to the said toothor facing; and a further object is to provide said staple-shape anchorwith parallel resilient arms whose outer ends are laterally bent intoU-shape for seating in a narrow parallel-walled cavity whose bottom isexpanded laterally and concaved to more readily seat or accommodate saidU-shape ends of the arms and not only enhance the attaching power of theanchoring device together with the cement in said cavity, but they mightbe used to fasten the tooth or facing without depending on the cement;and another object is to provide an attaching device that enables theready insertion or setting of a tooth or facing on said arms in a directline from the front of the mouth so that the upper edge of said tooth orfacing shall lie in contact with the overhang ing biting-edge of thecrown or bridge and Without danger of fracturing said upper edge of thetooth; and still another object is to provide said narrowparallel-walled cavity in the back'of the tooth or facing that will notweaken the wall or body at either side thereof and capable of firmattachment with the resilient, expansive anchor-arms of the staple-shapedevice in the crown or bridge.

In the accompanying sheet of drawings, Figure l is an elevation showingthe lingual side of a lower-anterior facing having a narrow,parallel-walled cavity for receiving a double-pronged resilient anchor;Fig. 2, a transverse section on line b, b, Fig. 1; Fig. 3, a detailperspective view of said resilient anchor; and Fig. 4, an assembledsection showing said narrow anterior-facing of Figs. 1 and 2, with theresilient parallel anchor-arms engaging its cement-filled cavity, andwith said anchor-arms projecting from their almost full-circlebow-portion that is embedded in the bridge.

The anchor adapted for use in connection With the lower anterior toothor facing C (Fig. l) is composed of an almost full-circle body-portion land a pair of integral, forwardly-projecting, parallel straight arms2whose outer ends are bent in outwardlycurved or arc-form 10 (Figs. 3 and4). Arms 2 are preferably resilient ones so that their said outer ends10 shall readily seat in the circularly-expanded bottom 9 at the innerend of a deep, narrow passage or parallel-walled contracted cavity 8made in the tooth or facing C on its lingual side. To further assure theattachment of the tooth or facing in place on the arms 2 ccment 6 ispreferably, but not essentiallv used in the cavity 8, (see Fig. 2). Theconnecting-portion 1 of this anchor is embedded in the bridge B (Fig.4), or it may be soldered, as desired, and cement 6 may be used, asabove stated, to further assure the firm attachment of the tooth orfacing to the extending-arms 2, if desired, although the friction-holdof the anchor-arms, under resilient tension, will ordinarily suflice.

I claim An artificial-tooth fastening comprising an almost circularmetallic anchoring-portion, parallel, resilient arms extendingintegrally from said anchoring-portion, and semi-circularclamping-extremities at the outer ends of said arms, said anchoring-porHENRY tion being adapted to be embedded in the labial side of the dentalWork and with said semi-circular extremities projecting beyond theoutervface thereof fQrIeady fastening- 5 engagement with a cavity ornarrow passage having straight parallel side-Walls and a MALCOLM Wi ness w JOHN ELIAS Copies of this pecent iney be obteined for jive centseeeh, eddnessing Washington, D. G.

circularly-expanded bottom provided in the lingual side of theartificial tooth.

MILLER MAUPIN.

JONES,

WILLIAM SGHUCHARDT.

e Commissioner of Patents,

